diff --git a/.eslintignore b/.eslintignore
new file mode 100644
index 0000000..849ddff
--- /dev/null
+++ b/.eslintignore
@@ -0,0 +1 @@
+dist/
diff --git a/.eslintrc.js b/.eslintrc.js
new file mode 100644
index 0000000..97d8597
--- /dev/null
+++ b/.eslintrc.js
@@ -0,0 +1,356 @@
+"use strict";
+module.exports = {
+	"plugins": [
+		"node",
+	],
+	"env": {
+		"node": true,
+		"commonjs": true,
+		"es6": true,
+	},
+	"parserOptions": {
+		"ecmaVersion": 11,
+	},
+
+	"overrides": [
+		{
+			"files": ["test/**/*.js"],
+			"env": {
+				"mocha": "true",
+			},
+			"rules": {
+				"prefer-arrow-callback": "off",
+				"no-invalid-this": "off",
+				"node/no-unpublished-import": "off",
+				"node/no-unpublished-require": "off",
+			},
+		},
+		{
+			"files": ["web/**/*.jsx"],
+			"env": {
+				"browser": true,
+			},
+			"parserOptions": {
+				"sourceType": "module",
+				"ecmaFeatures": {
+					"jsx": true,
+				},
+			},
+			"rules": {
+				"node/callback-return": "off",
+				"node/exports-style": "off",
+				"node/file-extension-in-import": "off",
+				"node/global-require": "off",
+				"node/handle-callback-err": "off",
+				"node/no-callback-literal": "off",
+				"node/no-deprecated-api": "off",
+				"node/no-exports-assign": "off",
+				"node/no-extraneous-import": "off",
+				"node/no-extraneous-require": "off",
+				"node/no-missing-import": "off",
+				"node/no-missing-require": "off",
+				"node/no-mixed-requires": "off",
+				"node/no-new-require": "off",
+				"node/no-path-concat": "off",
+				"node/no-process-env": "off",
+				"node/no-process-exit": "off",
+				"node/no-restricted-require": "off",
+				"node/no-sync": "off",
+				"node/no-unpublished-bin": "off",
+				"node/no-unpublished-import": "off",
+				"node/no-unpublished-require": "off",
+				"node/no-unsupported-features/es-builtins": "off",
+				"node/no-unsupported-features/es-syntax": "off",
+				"node/no-unsupported-features/node-builtins": "off",
+				"node/prefer-global/buffer": "off",
+				"node/prefer-global/console": "off",
+				"node/prefer-global/process": "off",
+				"node/prefer-global/text-decoder": "off",
+				"node/prefer-global/text-encoder": "off",
+				"node/prefer-global/url-search-params": "off",
+				"node/prefer-global/url": "off",
+				"node/prefer-promises/dns": "off",
+				"node/prefer-promises/fs": "off",
+				"node/process-exit-as-throw": "off",
+				"node/shebang": "off",
+			},
+		},
+	],
+
+	"rules": {
+		"accessor-pairs": "error",
+		"array-bracket-newline": "off",
+		"array-bracket-spacing": ["error", "never"],
+		"array-callback-return": "error",
+		"array-element-newline": "off",
+		"arrow-body-style": "error",
+		"arrow-parens": "off",
+		"arrow-spacing": ["error", { "after": true, "before": true }],
+		"block-scoped-var": "error",
+		"block-spacing": "error",
+		"brace-style": ["error", "1tbs", { "allowSingleLine": true }],
+		"camelcase": "off",
+		"capitalized-comments": "off",
+		"class-methods-use-this": "off",
+		"comma-dangle": [
+			"error",
+			{
+				"arrays": "always-multiline",
+				"objects": "always-multiline",
+				"imports": "always-multiline",
+				"exports": "always-multiline",
+				"functions": "only-multiline",
+			},
+		],
+		"comma-spacing": "error",
+		"comma-style": ["error", "last"],
+		"complexity": "error",
+		"computed-property-spacing": ["error", "never"],
+		"consistent-return": "error",
+		"consistent-this": "error",
+		"curly": "error",
+		"default-case": "error",
+		"default-case-last": "error",
+		"default-param-last": "error",
+		"dot-location": ["error", "property"],
+		"dot-notation": ["error", { "allowPattern": "^[a-z]+(_[a-z]+)*$" }],
+		"eol-last": "error",
+		"eqeqeq": "error",
+		"func-call-spacing": "error",
+		"func-name-matching": "error",
+		"func-names": "off",
+		"func-style": ["error", "declaration"],
+		"function-call-argument-newline": "off",
+		"function-paren-newline": "off",
+		"generator-star-spacing": ["error", { "before": false, "after": true }],
+		"grouped-accessor-pairs": "error",
+		"guard-for-in": "error",
+		"id-blacklist": "error",
+		"id-length": "off",
+		"id-match": "error",
+		"implicit-arrow-linebreak": "error",
+		"indent": ["error", "tab", { "SwitchCase": 1 }],
+		"indent-legacy": "off",
+		"init-declarations": "off",
+		"jsx-quotes": "error",
+		"key-spacing": "error",
+		"keyword-spacing": "error",
+		"line-comment-position": "off",
+		"linebreak-style": ["error", "unix"],
+		"lines-around-comment": "off",
+		"lines-around-directive": "off",
+		"lines-between-class-members": ["error", "always"],
+		"max-classes-per-file": "off",
+		"max-depth": "error",
+		"max-len": ["error", { "code": 120 }],
+		"max-lines": "off",
+		"max-lines-per-function": "off",
+		"max-nested-callbacks": "error",
+		"max-params": "off",
+		"max-statements": "off",
+		"max-statements-per-line": "off",
+		"multiline-comment-style": ["error", "separate-lines"],
+		"multiline-ternary": "off",
+		"new-cap": "error",
+		"new-parens": "error",
+		"newline-after-var": "off",
+		"newline-before-return": "off",
+		"newline-per-chained-call": "off",
+		"no-alert": "error",
+		"no-array-constructor": "error",
+		"no-await-in-loop": "off",
+		"no-bitwise": "off",
+		"no-buffer-constructor": "error",
+		"no-caller": "error",
+		"no-catch-shadow": "error",
+		"no-confusing-arrow": "error",
+		"no-console": "error",
+		"no-constant-condition": ["error", { "checkLoops": false }],
+		"no-constructor-return": "error",
+		"no-continue": "off",
+		"no-div-regex": "error",
+		"no-duplicate-imports": "error",
+		"no-else-return": "error",
+		"no-empty-function": "off",
+		"no-eq-null": "error",
+		"no-eval": "error",
+		"no-extend-native": "error",
+		"no-extra-bind": "error",
+		"no-extra-label": "error",
+		"no-extra-parens": "off",
+		"no-floating-decimal": "error",
+		"no-implicit-coercion": "error",
+		"no-implicit-globals": "error",
+		"no-implied-eval": "error",
+		"no-inline-comments": "off",
+		"no-invalid-this": "error",
+		"no-iterator": "error",
+		"no-label-var": "error",
+		"no-lone-blocks": "error",
+		"no-lonely-if": "error",
+		"no-loop-func": "error",
+		"no-magic-numbers": "off",
+		"no-mixed-operators": [
+			"error",
+			{
+				"groups": [
+					["&", "|", "^", "~", "<<", ">>", ">>>"],
+					["==", "!=", "===", "!==", ">", ">=", "<", "<="],
+					["in", "instanceof"],
+				],
+			},
+		],
+		"no-multi-assign": "error",
+		"no-multi-spaces": "error",
+		"no-multi-str": "error",
+		"no-multiple-empty-lines": "error",
+		"no-native-reassign": "error",
+		"no-negated-condition": "off",
+		"no-negated-in-lhs": "error",
+		"no-nested-ternary": "error",
+		"no-new": "error",
+		"no-new-func": "error",
+		"no-new-object": "error",
+		"no-new-wrappers": "error",
+		"no-octal-escape": "error",
+		"no-param-reassign": "off",
+		"no-plusplus": ["error", { "allowForLoopAfterthoughts": true }],
+		"no-proto": "error",
+		"no-restricted-exports": "error",
+		"no-restricted-globals": "error",
+		"no-restricted-imports": "error",
+		"no-restricted-properties": "error",
+		"no-restricted-syntax": "error",
+		"no-return-assign": "error",
+		"no-return-await": "off",
+		"no-script-url": "error",
+		"no-self-compare": "error",
+		"no-sequences": "error",
+		"no-shadow": ["error", { "allow": ["yargs"] }],
+		"no-spaced-func": "error",
+		"no-tabs": ["error", { "allowIndentationTabs": true }],
+		"no-template-curly-in-string": "error",
+		"no-ternary": "off",
+		"no-throw-literal": "error",
+		"no-trailing-spaces": "error",
+		"no-undef-init": "error",
+		"no-undefined": "off",
+		"no-unmodified-loop-condition": "error",
+		"no-unneeded-ternary": "error",
+		"no-unused-expressions": "error",
+		"no-use-before-define": "error",
+		"no-useless-backreference": "error",
+		"no-useless-call": "error",
+		"no-useless-computed-key": "error",
+		"no-useless-concat": "error",
+		"no-useless-constructor": "error",
+		"no-useless-rename": "error",
+		"no-useless-return": "error",
+		"no-var": "error",
+		"no-void": ["error", { "allowAsStatement": true }],
+		"no-warning-comments": "off",
+		"no-whitespace-before-property": "error",
+		"nonblock-statement-body-position": "error",
+		"object-curly-newline": "error",
+		"object-curly-spacing": "off",
+		"object-shorthand": "off",
+		"one-var": "off",
+		"one-var-declaration-per-line": "error",
+		"operator-assignment": "off",
+		"operator-linebreak": ["error", "after", {
+			"overrides": {
+				"?": "before",
+				":": "before",
+				"||": "before",
+				"&&": "before",
+			},
+		}],
+		"padded-blocks": "off",
+		"padding-line-between-statements": "error",
+		"prefer-arrow-callback": "error",
+		"prefer-const": "off",
+		"prefer-destructuring": "off",
+		"prefer-exponentiation-operator": "error",
+		"prefer-named-capture-group": "off",
+		"prefer-numeric-literals": "error",
+		"prefer-object-spread": "error",
+		"prefer-promise-reject-errors": "error",
+		"prefer-reflect": "off",
+		"prefer-regex-literals": "error",
+		"prefer-rest-params": "error",
+		"prefer-spread": "error",
+		"prefer-template": "error",
+		"quote-props": "off",
+		"quotes": ["error", "double", { "avoidEscape": true }],
+		"radix": ["error", "always"],
+		"require-atomic-updates": "off", // XXX Not sure why this triggers on process.title = ...
+		"require-await": "off",
+		"require-jsdoc": "off",
+		"require-unicode-regexp": "off",
+		"rest-spread-spacing": ["error", "never"],
+		"semi": "error",
+		"semi-spacing": "error",
+		"semi-style": "off",
+		"sort-imports": "off",
+		"sort-keys": "off",
+		"sort-vars": "error",
+		"space-before-blocks": "error",
+		"space-before-function-paren": "off",
+		"space-in-parens": ["error", "never"],
+		"space-infix-ops": "off",
+		"space-unary-ops": "error",
+		"spaced-comment": ["error", "always"],
+		"strict": "error",
+		"switch-colon-spacing": "error",
+		"symbol-description": "error",
+		"template-curly-spacing": ["error", "never"],
+		"template-tag-spacing": "error",
+		"unicode-bom": ["error", "never"],
+		"valid-jsdoc": ["error", { "requireReturn": false }],
+		"vars-on-top": "error",
+		"wrap-iife": "error",
+		"wrap-regex": "off",
+		"yield-star-spacing": "error",
+		"yoda": ["error", "never", { "exceptRange": true }],
+
+		"node/callback-return": "off",
+		"node/exports-style": "off",
+		"node/file-extension-in-import": "off",
+		"node/global-require": "error",
+		"node/handle-callback-err": "error",
+		"node/no-callback-literal": "error",
+		"node/no-deprecated-api": "error",
+		"node/no-exports-assign": "error",
+		"node/no-extraneous-import": "error",
+		"node/no-extraneous-require": "error",
+		"node/no-missing-import": "error",
+		"node/no-missing-require": "error",
+		"node/no-mixed-requires": "error",
+		"node/no-new-require": "error",
+		"node/no-path-concat": "error",
+		"node/no-process-env": "error",
+		"node/no-process-exit": "error",
+		"node/no-restricted-require": "off",
+		"node/no-sync": "error",
+		"node/no-unpublished-bin": "error",
+		"node/no-unpublished-import": "error",
+		"node/no-unpublished-require": [
+			"error",
+			{ "allowModules": ["webpack", "webpack-merge", "webpack-dev-middleware"] },
+		],
+		"node/no-unsupported-features/es-builtins": "error",
+		"node/no-unsupported-features/es-syntax": "error",
+		"node/no-unsupported-features/node-builtins": "error",
+		"node/prefer-global/buffer": "error",
+		"node/prefer-global/console": "error",
+		"node/prefer-global/process": "error",
+		"node/prefer-global/text-decoder": "error",
+		"node/prefer-global/text-encoder": "error",
+		"node/prefer-global/url-search-params": "error",
+		"node/prefer-global/url": "error",
+		"node/prefer-promises/dns": "off",
+		"node/prefer-promises/fs": "off",
+		"node/process-exit-as-throw": "error",
+		"node/shebang": "error",
+	},
+};
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..43bac01
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,31 @@
+name: CI
+
+on:
+  push:
+  pull_request:
+
+  workflow_dispatch:
+
+jobs:
+  jslint:
+	name: Eslint
+	runs-on: ubuntu-latest
+
+	steps:
+	- uses: actions/checkout@v2
+	- uses: actions/setup-node@v2
+	  with:
+		node-version: 16.x
+	- run: npm i --no-optional
+	- run: npm i eslint eslint-plugin-node
+	- run: npm run lint
+  lualint:
+	name: Luacheck
+	runs-on: ubuntu-latest
+
+	steps:
+	  - uses: actions/checkout@v2
+	  - uses: nebularg/actions-luacheck@v1.1.0
+		with:
+		  files: module/
+		  annotate: "error"
diff --git a/.github/workflows/lua.yml b/.github/workflows/lua.yml
deleted file mode 100644
index e02f886..0000000
--- a/.github/workflows/lua.yml
+++ /dev/null
@@ -1,20 +0,0 @@
-name: lua check
-
-on:
-  push:
-  pull_request:
-
-  workflow_dispatch:
-
-jobs:
-  lualint:
-	runs-on: ubuntu-latest
-
-	steps:
-	  # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-	  - uses: actions/checkout@v2
-
-	  - uses: nebularg/actions-luacheck@v1.1.0
-		with:
-		  files: module/
-		  annotate: "error"
diff --git a/info.js b/info.js
index 3a378de..24cbcf2 100644
--- a/info.js
+++ b/info.js
@@ -122,7 +122,7 @@ module.exports = {
 								type: "array", items: {
 									type: "array",
 									items: { type: "number" },
-								}
+								},
 							},
 							edges: {
 								type: "array",
diff --git a/master.js b/master.js
index 489c5a0..fb73257 100644
--- a/master.js
+++ b/master.js
@@ -68,31 +68,29 @@ class MasterPlugin extends libPlugin.BaseMasterPlugin {
 	async getMapDataRequestHandler(message) {
 		const instances = [...this.master.instances];
 		return {
-			map_data: instances.map(instance => {
-				return {
-					instance_id: instance[1].config.get("instance.id"),
-					center: [
-						(instance[1].config.get("gridworld.grid_x_position") - 1) * instance[1].config.get("gridworld.grid_x_size") + instance[1].config.get("gridworld.grid_x_size") / 2,
-						(instance[1].config.get("gridworld.grid_y_position") - 1) * instance[1].config.get("gridworld.grid_y_size") + instance[1].config.get("gridworld.grid_y_size") / 2
+			map_data: instances.map(instance => ({
+				instance_id: instance[1].config.get("instance.id"),
+				center: [
+					(instance[1].config.get("gridworld.grid_x_position") - 1) * instance[1].config.get("gridworld.grid_x_size") + instance[1].config.get("gridworld.grid_x_size") / 2,
+					(instance[1].config.get("gridworld.grid_y_position") - 1) * instance[1].config.get("gridworld.grid_y_size") + instance[1].config.get("gridworld.grid_y_size") / 2,
+				],
+				bounds: [
+					[ // Top left
+						(instance[1].config.get("gridworld.grid_x_position") - 1) * instance[1].config.get("gridworld.grid_x_size"),
+						(instance[1].config.get("gridworld.grid_y_position") - 1) * instance[1].config.get("gridworld.grid_y_size"),
+					], [ // Bottom left
+						(instance[1].config.get("gridworld.grid_x_position") - 1) * instance[1].config.get("gridworld.grid_x_size"),
+						instance[1].config.get("gridworld.grid_y_position") * instance[1].config.get("gridworld.grid_y_size"),
+					], [ // Bottom right
+						instance[1].config.get("gridworld.grid_x_position") * instance[1].config.get("gridworld.grid_x_size"),
+						instance[1].config.get("gridworld.grid_y_position") * instance[1].config.get("gridworld.grid_y_size"),
+					], [ // Top right
+						instance[1].config.get("gridworld.grid_x_position") * instance[1].config.get("gridworld.grid_x_size"),
+						(instance[1].config.get("gridworld.grid_y_position") - 1) * instance[1].config.get("gridworld.grid_y_size"),
 					],
-					bounds: [
-						[ // Top left
-							(instance[1].config.get("gridworld.grid_x_position") - 1) * instance[1].config.get("gridworld.grid_x_size"),
-							(instance[1].config.get("gridworld.grid_y_position") - 1) * instance[1].config.get("gridworld.grid_y_size")
-						], [ // Bottom left
-							(instance[1].config.get("gridworld.grid_x_position") - 1) * instance[1].config.get("gridworld.grid_x_size"),
-							instance[1].config.get("gridworld.grid_y_position") * instance[1].config.get("gridworld.grid_y_size")
-						], [ // Bottom right
-							instance[1].config.get("gridworld.grid_x_position") * instance[1].config.get("gridworld.grid_x_size"),
-							instance[1].config.get("gridworld.grid_y_position") * instance[1].config.get("gridworld.grid_y_size")
-						], [ // Top right
-							instance[1].config.get("gridworld.grid_x_position") * instance[1].config.get("gridworld.grid_x_size"),
-							(instance[1].config.get("gridworld.grid_y_position") - 1) * instance[1].config.get("gridworld.grid_y_size")
-						]
-					],
-					edges: instance[1].config.get("edge_transports.internal").edges,
-				}
-			})
+				],
+				edges: instance[1].config.get("edge_transports.internal").edges,
+			})),
 		};
 	}
 
diff --git a/package.json b/package.json
index 28a253a..65f46d8 100644
--- a/package.json
+++ b/package.json
@@ -8,6 +8,7 @@
   "repository": "Danielv123/gridworld",
   "scripts": {
 	"build": "webpack-cli --env production",
+	"lint": "eslint \"*.js\" src web",
 	"test": "echo \"Error: run tests from root\" && exit 1"
   },
   "bugs": {
diff --git a/web/components/GridVisualizer.jsx b/web/components/GridVisualizer.jsx
index 9f6fa38..2aafda6 100644
--- a/web/components/GridVisualizer.jsx
+++ b/web/components/GridVisualizer.jsx
@@ -35,24 +35,23 @@ function GridVisualizer(props) {
 						attributionControl={false}
 						bounds={getBounds(mapData.map_data?.map?.(instance => instance.bounds.map(position => [-1 * position[1] / 100, position[0] / 100])).flat() ?? [])}
 					>
-						{mapData?.map_data?.map?.(instance =>
-							<div key={instance.instance_id}>
-								{instance.edges.map(edge => {
-									// Coordinates are given as latitudes and longitudes, which corresponds to Y and X in the grid
-									let origin = [-1 * edge.origin[1] / 100, edge.origin[0] / 100];
-									let destination = [...origin];
-									if (edge.direction === 0) destination[1] += edge.length / 100;
-									if (edge.direction === 4) destination[1] -= edge.length / 100;
-									if (edge.direction === 2) destination[0] -= edge.length / 100;
-									if (edge.direction === 6) destination[0] += edge.length / 100;
-									return <Polyline
-										key={`${instance.instance_id}${edge.id}`}
-										positions={[origin, destination]}
-										opacity={0.3}
-									/>
-								})}
-								<InstanceRender instance={instance} activeInstance={activeInstance} setActiveInstance={setActiveInstance} />
-							</div>
+						{mapData?.map_data?.map?.(instance => <div key={instance.instance_id}>
+							{instance.edges.map(edge => {
+								// Coordinates are given as latitudes and longitudes, which corresponds to Y and X in the grid
+								let origin = [-1 * edge.origin[1] / 100, edge.origin[0] / 100];
+								let destination = [...origin];
+								if (edge.direction === 0) { destination[1] += edge.length / 100; }
+								if (edge.direction === 4) { destination[1] -= edge.length / 100; }
+								if (edge.direction === 2) { destination[0] -= edge.length / 100; }
+								if (edge.direction === 6) { destination[0] += edge.length / 100; }
+								return <Polyline
+									key={`${instance.instance_id}${edge.id}`}
+									positions={[origin, destination]}
+									opacity={0.3}
+								/>;
+							})}
+							<InstanceRender instance={instance} activeInstance={activeInstance} setActiveInstance={setActiveInstance} />
+						</div>
 						)}
 					</Map> : ""}
 				</Col>
@@ -68,9 +67,7 @@ function InstanceRender(props) {
 	const [instance] = useInstance(props.instance.instance_id);
 
 	return <Rectangle
-		bounds={getBounds(props.instance.bounds.map(position => {
-			return [-1 * position[1] / 100, position[0] / 100];
-		}))}
+		bounds={getBounds(props.instance.bounds.map(position => [-1 * position[1] / 100, position[0] / 100]))}
 		onclick={() => {
 			props.setActiveInstance(props.instance.instance_id);
 		}}
@@ -82,7 +79,7 @@ function InstanceRender(props) {
 		<Tooltip direction="center">
 			<InstanceTooltip instance_id={props.instance.instance_id} />
 		</Tooltip>
-	</Rectangle>
+	</Rectangle>;
 }
 
 function getBounds(points) {
diff --git a/web/components/InstanceModal.jsx b/web/components/InstanceModal.jsx
index 4aa97da..10dfbe1 100644
--- a/web/components/InstanceModal.jsx
+++ b/web/components/InstanceModal.jsx
@@ -4,13 +4,14 @@ import DeleteOutlined from "@ant-design/icons/DeleteOutlined";
 
 import {
 	useInstance,
-	useSlave, useAccount,
+	useSlave,
+	useAccount,
 	InstanceStatusTag,
 	StartStopInstanceButton,
 	SavesList,
 	InstanceRcon,
 	LogConsole,
-	InstanceConfigTree
+	InstanceConfigTree,
 } from "@clusterio/web_ui";
 
 function InstanceModal(props) {
@@ -60,7 +61,7 @@ function InstanceModal(props) {
 				</Descriptions.Item>
 				{instance["status"] && <Descriptions.Item label="Status"><InstanceStatusTag status={instance["status"]} /></Descriptions.Item>}
 			</Descriptions>
-			<Tabs  defaultActiveKey="1">
+			<Tabs defaultActiveKey="1">
 				{
 					account.hasAllPermission("core.instance.save.list", "core.instance.save.list_subscribe")
 					&& <Tabs.TabPane tab="Saves" key="saves">
@@ -83,7 +84,7 @@ function InstanceModal(props) {
 				}
 			</Tabs>
 		</>}
-	</>
+	</>;
 }
 
 export default InstanceModal;
diff --git a/web/pages/OverviewPage.jsx b/web/pages/OverviewPage.jsx
index a337972..b8dd1be 100644
--- a/web/pages/OverviewPage.jsx
+++ b/web/pages/OverviewPage.jsx
@@ -1,17 +1,17 @@
 import React from "react";
 import { useHistory } from "react-router-dom";
-import { Button, Select, PageHeader } from "antd";
+import { Button, PageHeader, Popconfirm } from "antd";
 import GithubOutlined from "@ant-design/icons/GithubOutlined";
+import DeleteOutlined from "@ant-design/icons/DeleteOutlined";
 
-import { PageLayout, useInstanceList } from "@clusterio/web_ui";
+import { PageLayout, useInstanceList, useAccount } from "@clusterio/web_ui";
 import "../index.css";
 import GridVisualizer from "../components/GridVisualizer";
 
-const { Option } = Select;
-
 function OverviewPage() {
 	const history = useHistory();
 	let [instanceList] = useInstanceList();
+	let account = useAccount();
 
 	return <PageLayout nav={[{ name: "Gridworld" }]}>
 		<PageHeader
@@ -25,6 +25,27 @@ function OverviewPage() {
 					onClick={() => history.push("/gridworld/create")}
 					type="primary"
 				>Create new gridworld</Button>,
+				account.hasPermission("core.instance.delete")
+				&& <Popconfirm
+					key="delete"
+					title="Permanently delete ALL instances and server saves?"
+					okText="Delete"
+					placement="bottomRight"
+					okButtonProps={{ danger: true }}
+					onConfirm={async () => {
+						instanceList.forEach(instance => {
+							libLink.messages.deleteInstance.send(
+								control, { instance_id: instance.id }
+							).catch(notifyErrorHandler("Error deleting instance"));
+						});
+					}}
+				>
+					<Button
+						danger
+					>
+						<DeleteOutlined />
+					</Button>
+				</Popconfirm>,
 			]}
 		/>
 		<p>This plugin handles creation, configuration and management of gridworlds.</p>